JELEN'S & HUMPHREYS, K. K. [. (1991). Jelen's cost and optimization engineering/edeted byKenneth K. Humphreys.--Ed. 3. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)JELEN'S agus Kenneth K. [ed] HUMPHREYS. Jelen's Cost and Optimization Engineering/edeted ByKenneth K. Humphreys.--Ed. 3. New York: McGraw-Hill, 1991.
Lua MLA (9ú heag.)JELEN'S agus Kenneth K. [ed] HUMPHREYS. Jelen's Cost and Optimization Engineering/edeted ByKenneth K. Humphreys.--Ed. 3. McGraw-Hill, 1991.
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